ACS Applied Electronic Materials
·
2023
·
IF 4.7
Xueqi Yin,Guoke Wei,Aijun Gong,Xianglin Zhou
This paper focuses on the effect of the porosity of Fe3O4 on electromagnetic wave (EMW) loss. The pore structures were based on the Voronoi method by MATLAB, and the electromagnetic fields were constructed based on COMSOL Multiphysics. The energy loss of EMWs with frequencies of 2–18 GHz through Fe3O4 nanoparticles with different porosities was simulated and analyzed. Well-defined porous Fe3O4 nanostructures were synthesized by heating FeCl3·6H2O, urea, and surfactant (TBAB) in an ethylene glycol solution. Then, the prepared samples were eroded with oxalic acid to obtain different porosities. The electromagnetic parameters of the experimental samples were tested to validate the simulation results. The results showed that increasing the porosity, to some extent, was beneficial to the impedance matching characteristics, thus improving the EMW loss. The simulation results with different porosities and the experimental results with varying pore volumes had some consistency. When the porosity of the digital model was 30.63% and the pore volume of the experimental samples was 0.3102 cm3/g, |Zin/Z0| was the closest to 1, indicating that the impedance matching was the best. At the same time, it was found that the pore volume of the material can be used to characterize the porosity during the experimental preparation, thus simplifying the data processing.
研究领域:
材料科学
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电磁学
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纳米技术
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模拟与建模
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产品关联
DOI
高影响因子
Materials
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2020
·Vol. 13
·期 10
·2332
·
IF 3.057
Haiqing Du,Haifei An,Jian Zhang,Yuhao Ding,Chao Lian,Hao Bai
Coating slurry, in which the infrared radiation material is the main content, is applied in industrial furnaces to improve heat transfer and raise efficiency of furnaces. In this study, aCuxCo1−xFe2O4series material with a spinel structure was prepared, and the emissivity of different formulas in two wavebands (3–5 μm and 8–14 μm) was measured. To ensure that the material delivered high emissivity, optimization models were proposed using Matlab software, and proportions of CuO, Co2O3and Fe2O3were found to be 16.98%, 16.73% and 66.29%, respectively, in the optimal formula. Thus, using theCuxCo1−xFe2O4series material and additives, according to mixture regression method, fifteen formulas of coating slurry were designed, prepared and the emissivities were measured. With the Matlab software optimization model, the content of coating slurry was optimized and the corresponding emissivities were measured to be 0.931 and 0.905 in two wavebands, which is in agreement with the optimized calculation.
研究领域:
材料科学
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热能工程
·
应用数学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2021
·
IF 2.694
Yuanyuan Han,Houchun Yan,Mai Han,Wei Wang,Jia Han,Tao Xing,Bing Li,Qingsong Li
The basic liquid–liquid equilibrium data of two systems {water + 2-propanol (IPA) + 1-octanol/n-propyl acetate} were measured. The distribution coefficients of the 2-propanol and the separation factors of the systems were calculated to analyze the extraction ability of the two extractants that extract IPA from water. The correlation model Hand equation was used to fit the data. The value of the linear correlation coefficient R2 > 0.99 indicates that the linear fit of the experimental data is good. The theoretical models NRTL and UNIQUAC were used to correlate the measured data. The deviation between experimental data and simulated data was calculated by the root mean square deviation (RMSD). The RMSD < 0.01 means that the two models were suitable for the regression of the systems studied in this work. GUI-MATLAB has validated the binary interaction parameters. The basic data obtained from this work can support the separation of water and IPA.
研究领域:
化学工程
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物理化学
·
热力学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xiao Wu,Daobin Jin,Ming Li,Xiliang Luo,Lei Wang
The construction of reliable and sensitive wearable sensors capable of monitoring specific targets in sweat remains a challenge highly relevant to a range of sensor/diagnostic applications. Herein, we develop a wearable microfluidic platform to monitor sweat lactate, in which spherical colloidal Photonic Crystal Hydrogel (PCH) is synthesized to construct the sensing part. Thanks to the structural color of PCH, lactate concentrations can be obtained via the eye-recognizable and low angle-dependent color variation. Accurate quantitative analysis is performed on a smart phone with Matlab code by integrating the linear relationship between hue value of sample photos and lactate concentrations. The developed sweat sensor presents good selectivity and long-term stability, and it is capable of detecting lactate accurately in human sweat within the physiological range. On-body measurement performed on volunteers successfully demonstrates the applicability of the developed device. This wearable analytical platform provides a promising tool for sweat lactate detection in sports science and medical diagnosis. And it is expected to contribute to developing user-friendly wearable biochemical sensor devices.
研究领域:
生物医学工程
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传感器与诊断
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可穿戴技术
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运动科学
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医学诊断
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DOI
高影响因子
ACS Sensors
·
2022
·
IF 9.618
Kexin Fan,Jiayang Zeng,Chenyu Yang,Gonglei Wang,Kai Lian,Xiuhong Zhou,Yaping Deng,Guozhen Liu
Uric acid (UA) is an important biomarker for many diseases. A sensitive point-of-care (POC) testing platform is designed for the digital quantification of salivary UA based on a colorimetric reaction on an easy-to-build smartphone-assisted microfluidic paper-based analytical device (SμPAD). UA levels are quantified according to the color intensity of Prussian blue on the SμPAD with the aid of a MATLAB code or a smartphone APP. A color correction method is specifically applied to exclude the light effect. Together with the engineering design of SμPADs, the background calibration function with the APP increases the UA sensitivity by 100-fold to reach 0.1 ppm with a linear range of 0.1–200 ppm. The assay time is less than 10 min. SμPADs demonstrate a correlation of 0.97 with a commercial UA kit for the detection of salivary UA in clinical samples. SμPADs provide a sensitive, fast, affordable, and reliable tool for the noninvasive POC quantification of salivary UA for early diagnosis of abnormal UA level-associated health conditions.
研究领域:
医学诊断
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即时检测
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生物化学
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微流控技术
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智能手机应用
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显色分析
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2023
·
IF 2.6
Yingmin Yu,Jiajun Wei,Deming Zhao,Lingxiao Yi,Mai Han,Jingwei Cao,Fangyu Zhang,Xiaocheng Zhang
To recover 2-ethyl-1-hexanol and 1,2-propanediol from waste polyester alcoholysis products, liquid–liquid equilibrium (LLE) data for the ternary system of 2-ethyl-1-hexanol + 1,2-propanediol + (water, n-heptane) at different temperatures (303.2, 313.2, and 323.2 K) were studied at 101.3 kPa. The distribution coefficient (D) and selectivity coefficient (S) were used as indicators to assess the separation effect. The NRTL and UNIQUAC models were used to correlate the experimental data and the root mean square deviation (RMSD) values were calculated to be less than 0.75 and 0.97%, respectively. Finally, the consistency between the experimental data and the regression parameters was verified using the GUI-MATLAB tool. σ-Profiles are used to discuss the interactions of substances in this work. It was found that both extractants could separate and extract 2-ethyl-1-hexanol and 1,2-propanediol effectively, with water being more effective.
研究领域:
化学工程
·
热力学
·
分离科学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2021
·
IF 2.694
Yuanyuan Han,Mai Han,Houchun Yan,Qingqing Yin,Qingsong Li
Liquid–liquid equilibrium (LLE) data for the ternary mixture of water + furfuryl alcohol (FAL) + {1-pentanol and n-propyl acetate} was measured in 101.3 kPa at 303.2, 313.2, and 323.2 K. The separation factor (S) and distribution coefficient (D) appraised the utility of extracting FAL from water. The experimental data were accurately correlated by the nonrandom two-liquid (NRTL) and the universal quasi-chemical (UNIQUAC) models with the root-mean-square deviation (RMSD%) values. The values are less than 0.37%. The relevant binary interaction parameters were calculated. The GUI-MATLAB was used to check the consistency of the calculated binary interaction parameters and liquid–liquid equilibrium data. The σ-profiles can analyze the molecular interaction, which further confirms the accuracy of the experimental results. The excellent performance of 1-pentanol and n-propyl acetate in the extraction of FAL from an aqueous solution was shown.
研究领域:
化学工程
·
热力学
·
物理化学
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DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2021
·
IF 3.178
Mai Han,Song Lin,Mingyi Xu,Yueyang Jiang,Qingqing Yin,Yufan Pang,Yujian Song,Qingsong Li
In order to extract and refine tetrahydrofurfuryl alcohol (THFA) from water, this work obtained the liquid–liquid equilibrium (LLE) data of THFA in the aqueous solution using 4-Methyl-2-pentanone (MIBK) and 4-Methyl-2-pentanol (MIBC) at 303.2 K, 313.2 K, and 323.2 K under 101.3 kPa. The distribution coefficient ( D ) and selectivity coefficient ( S ) were used to evaluate the effect of extracting THFA from an aqueous solution, and it is found that both two solvents are excellent for the extraction of THFA. The Othmer-Tobias and Hand equations were used to verify the reliability of the LLE data with the linear coefficient was greater than 0.99%. The NRTL and UNIQUAC models successfully correlated the experimental data with the RMSD% values less than 0.57% and 0.56%, respectively. The GUI-MATLAB tool was used to verify the excellent reliability of the regression parameters.
研究领域:
化学工程
·
热力学
·
分离科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Di Feng,Xueyan Li,Xiaojie Fan,Yifan Guo,Jingwei Zhang,Hang Yuan,Wenjuan Wang,Tingting Zhao,Tian Han
After migration in 95 % ethanol (food simulant) at 70 °C for 2 h (accelerated conditions), the cytotoxicity and endocrine-disruption activity of 42 food contact silicone products (FCSPs) obtained from the Chinese market were studied. Of 31 kitchenwares, 96 % showed mild or above cytotoxicity (relative growth rate < 80 %) using the HeLa neutral red uptake test; and 84 % showed estrogenic (64 %), anti-estrogenic (19 %), androgenic (42 %), and anti-androgenic (39 %) activities by the Dual-luciferase reporter gene assay. The mold sample induced late phase HeLa apoptosis as detected by Annexin V-FITC/PI double staining flow cytometry, in addition, the migration of mold sample has a higher risk of endocrine disruption at high temperature usage. Encouragingly, 11 bottle nipples had neither cytotoxic nor hormonal activity. Utilizing multiple mass spectrometry techniques, non-intentionally added substances (NIASs) in 31 kitchenwares were analyzed, and the migration levels of 26 organic compounds and 21 metals were quantified, furthermore, the safe risk of single migrant was evaluated through their special migration limit (SML) or threshold of toxicological concern (TTC). Using “nchoosek” statement and Spearman's correlation analysis in MATLAB, the migration of 38 compounds or combinations including metals, plasticizers, methylsiloxanes, and lubricants, had strong correlation with cytotoxicity or hormonal activity. The coexistence of various chemical substances in migrants leads to complex biological toxicity of FCSPs, so it is very important to detect the toxicity of the final products. The combination of bioassays and chemical analyses are valuable tools to facilitate the identification and analyses of FCSPs and migrants that have potential safety risks.
研究领域:
食品科学
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毒理学
·
化学分析
·
生物检测
·
环境健康
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产品关联
DOI
PubMed
高影响因子
WATER RESEARCH
·
2024
·
IF 11.4
Zheng-Tao Li,He-Ping Zhao
The treatment of heavy metal(loid) (HM) composite pollution has long posed a challenge for the bioremediation of organohalide-contaminated sites. Given the prevalent cohabitation of sulfate-reducing bacteria (SRB) with organohalide-respiring bacteria (OHRB), we proposed a sulfate-amendment strategy to achieve synergistic remediation of trichloroethene and diverse HMs [50μM of As(III), Ni(II), Cu(II), Pb(II)]. Correspondingly, 50–75 μM sulfate was introduced to HM inhibitory batches to investigate the enhancement effect of sulfate amendment on bio-dechlorination. Dechlorination kinetics and MATLAB modeling indicated that sulfate amendment comprehensively improved the reductive dechlorination performance in the presence of As(III), Ni(II), Pb(II) and mixed HMs, while no enhancement was observed under Cu(II) exposure. Additionally, sulfate introduction effectively accelerated the detoxification of Ni(II), Pb(II), Cu(II), and As(III), achieving removal efficiencies of 76.87 %, 64.01 %, 86.37 %, and 95.50 % within the first three days, respectively. Meanwhile, propionate dynamics and acetogenesis indicated enhanced carbon source and e-donor supply. 16S rRNA gene sequencing and metagenomic analysis results demonstrated that HM sequestration was accomplished jointly by SRB and HM-resistant bacteria via extracellular precipitation (metal sulfide) and intracellular sequestration, while their contribution depended on the specific coexisting HM species present. This study highlights the critical role of sulfate in the concurrent bioremediation of HM-organohalide composite contamination and provides insights for developing a cost-effective in-situ bioremediation strategy.
研究领域:
环境科学
·
微生物学
·
生物修复
·
污染控制
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）